Refer to the exhibit.

The exhibit shows a network with HP 3500 yI Series switches at the access layer and HP 8206 zI
switches at the core.
The customer with solution has logged several support calls. Which were eventually tracked down
to spanning tree issues.
How can a network architect adjust this solution to prevent this issue in the future?

A.
Implement OpenFlow on one of the switches, and use that protocol to choose which links down
to spanning tree issues.

B.
Connect three or four 3500 yI switches together in a group. Establish a distributed trunk
between two switches in each group and the core switches.

C.
Implement BPDU filters on the switch links and loop protection on the edge ports.

D.
Configure distributed trunking between each 3500 yI switch and the two 8200 zI switches at the
core.